Idrissa 'Skip' Kamara, who won a Golden Gloves boxing championship in 2010, died suddenly Tuesday at the age of 21 after collapsing in his Clifton apartment.

According to his former boxing trainer Gary Stark Sr., Kamara "showered, dressed, and went to breakfast with a friend. When he came home, he passed out and apparently never recovered."

Stark said Kamara was taken to Staten Island University Hospital North in Sea View. The cause of death is currently not known.

Kamara, a product of the Atlas Cops & Kids Boxing Club, captured the Daily News Golden Gloves 141-pound novice title in March of 2010 with a three-round decision over Patrick Day at the Theater at Madison Square Garden.

Kamara, a former McCown HS student, also received the Mark Breland Award as the top novice fighter in the tournament.

Heart heavy right now, I can't believe I lost another brother! #RIPSkip

Also winning one of his three Golden Gloves titles that year was U.S. Olympian and current undefeated pro Marcus Browne, a friend of Kamara.

"I went to the hospital as soon as I heard," said Browne. "The last time I spoke to him was the day of my last fight (Aug. 9). As far as I know, nothing seemed to be wrong with him physically. He was good."

Kamara had stopped boxing the past two years, but both Stark and Atlas Cops & Kids director Pat Russo said he had been staying in shape playing soccer, something he had done as recently as Monday both noted.

"This is totally out of the blue. He wasn't boxing anymore, but he was still in good shape and would still drop by the gym from time to time," said Russo.

"He was what you'd want your son to be. He had gotten his GED through the African Refugee Project in Park Hill. He was a kid who this program is all about."

"I had heard from one of his friends that he felt funny about coming to see me at the gym, because he thought he had let me down by not boxing. But he was like a little son to me," added Stark, who said Kamara had attended a college in Florida last year but wasn't sure if he was going back this school year.

"I still can't believe it. I'll always remember his smile and just him hanging out at the gym with us. It's a sad day. He was so young."